A068537 Numbers which can be written as the sum of 2 like powers (x^n + y^n; n>1 & x,y>0).

2, 5, 8, 9, 10, 13, 16, 17, 18, 20, 25, 26, 28, 29, 32, 33, 34, 35, 37, 40, 41, 45, 50, 52, 53, 54, 58, 61, 64, 65, 68, 72, 73, 74, 80, 82, 85, 89, 90, 91, 97, 98, 100, 101, 104, 106, 109, 113, 116, 117, 122, 125, 126, 128, 129, 130, 133, 136, 137, 145, 146

Offset

1,1

Links

Table of n, a(n) for n=1..61.

Example

2 = 1^2 + 1^2; 5 = 1^2 + 2^2; 8 = 2^2 + 2^2; 9 = 1^3 + 2^3; 10 = 1^2 + 3^2; 13 = 2^2 + 3^2; 16 = 2^3 + 2^3; 17 = 1^2 + 4^2; ..... 33 = 1^5 + 2^5; etc...

Crossrefs

Superset of A000404, A003325, A003336, A003347, A003358, A003369, A003380, A003391.

Sequence in context: A070049 A085254 A274035 * A047620 A283205 A322916

Adjacent sequences: A068534 A068535 A068536 * A068538 A068539 A068540

Keyword

nonn

Author

Shawn Schafer (coolrelish(AT)hotmail.com), Mar 22 2002

Extensions

More terms from Michel Marcus, Aug 07 2013

More terms from Sean A. Irvine, Feb 21 2024

Status

approved